International DuraStar DPF & Mufflers
Find the best aftermarket exhaust parts, like mufflers, for your International 4100-4300-4400 Durastar to keep your semi-truck on the road. Shop our collection of aftermarket mufflers, exhaust resonators, muffler inserts, exhaust dumps, and more. 4 State Trucks has you covered with the best mufflers in the business.
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BESTfit 8 Inch OD X 45 Inch VK Internal Muffler Pipe
BESTFIT TRUCK PARTS
$687.99BESTfit 8 Inch OD X 45 Inch VK Internal Muffler PipeEnhance your vehicle's exhaust system with our premium Muffler, meticulously crafted to deliver superior performance and sound control. Featuring substantial dimensions of 8 inches in diameter and 45...$687.99 -
BESTfit 7 Inch OD X 45 Inch VK Internal Muffler Pipe
BESTFIT TRUCK PARTS
$625.99BESTfit 7 Inch OD X 45 Inch VK Internal Muffler PipeElevate your vehicle's performance with our top-of-the-line Muffler, designed to deliver unparalleled sound control and airflow optimization. Featuring a generous 7-inch diameter and a 45-inch length,...$625.99 -
On Sale
BESTfit 6 Inch OD X 45 Inch VK Internal Muffler Pipe
BESTFIT TRUCK PARTS
Now: $345.50Was: $690.99BESTfit 6 Inch OD X 45 Inch VK Internal Muffler PipeExperience unparalleled performance with our premium Muffler, meticulously crafted for exceptional sound control and optimized airflow. Boasting a 6-inch diameter and a 45-inch length, this aftermarket...Now: $345.50Was: $690.99 -
BESTfit 5 Inch OD X 45 Inch VK Internal Muffler Pipe
BESTFIT TRUCK PARTS
$724.99BESTfit 5 Inch OD X 45 Inch VK Internal Muffler PipeEnhance your vehicle's performance with our top-of-the-line Muffler, designed for superior sound reduction and optimal airflow. This aftermarket replacement part features a 5-inch diameter and a length...$724.99 -
BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance Muffler W/ 4 Inch Inlet, 5 Inch Outlet
BESTFIT TRUCK PARTS
$1,064.99BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance Muffler W/ 4 Inch Inlet, 5 Inch OutletCrafted from durable Aluminized Steel, this aftermarket muffler is designed to elevate your vehicle's exhaust system. It comes complete with mounting hardware...$1,064.99 -
BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance Muffler W/ 4 Inch Inlet/Outlet
BESTFIT TRUCK PARTS
$622.99BESTfit 6 X 29 Inch Aluminized Steel Quiet Performance Muffler W/ 4 Inch Inlet/OutletConstructed from robust Aluminized Steel, this aftermarket muffler ensures durability and longevity for your vehicle's exhaust system. It comes with mounting hardware...$622.99 -
BESTfit 5 X 18 Inch 16 Gauge Aluminized Steel Internal Muffler
BESTFIT TRUCK PARTS
$69.76BESTfit 5 X 18 Inch 16 Gauge Aluminized Steel Internal Muffler * High Quality Internal Muffler* Aluminized Steel* 16 Gauge* Dimensions - 5 Inch Diameter - 18 Inch Length* Works Well With 36 Inch Stacks* Hardware Not Included* Sold Individually*...$69.76 -
BESTfit 4 X 18 Inch 16 Gauge Aluminized Steel Internal Muffler
BESTFIT TRUCK PARTS
$64.66BESTfit 4 X 18 Inch 16 Gauge Aluminized Steel Internal Muffler * High Quality Internal Muffler* Aluminized Steel * 16 Gauge* Dimensions - 4 Inch Diameter - 18 Inch Length* Works Well With 36 Inch Stacks* Hardware Not Included* Sold Individually*...$64.66 -
BESTfit 4 Inch In X 5 Inch Out X 8 X 21 Inch Aluminized Steel Type 1 Muffler
BESTFIT TRUCK PARTS
$131.99BESTfit 4 Inch In X 5 Inch Out X 8 X 21 Inch Aluminized Steel Type 1 Muffler * High Quality Muffler* Aluminized Steel* Dimensions - 4 Inch Inside Diameter - 5 Inch Inside Diameter - 8 Inch Body Diameter - 15 Inch Body Length - 21 Inch Over All...$131.99 -
BESTfit 8 X 30 Inch OAL Exhaust Muffler With 5 Inch I.D. Inlet & Outlet
BESTFIT TRUCK PARTS
$145.99BESTfit Muffler 8 Inch Diameter * High Quality Muffler* Aluminized* Dimensions - 8 Inch Diameter - 5 Inch I.D. Inlet/Outlet - 24 Inch Length Body - 30 Inch Length Overall* Sold Individually* Warranty On Mufflers Against Defects In Workmanship &...$145.99 -
BESTfit 10 X 51.5 Inch Performance Muffler
BESTFIT TRUCK PARTS
$179.99BESTfit 51.5 Inch Performance Sport Muffler * High Quality Muffler* 51.5 Inch Wide Muffler Is 1 Inch Wider Than The Standard Performance Sport * Uses Acoustic Louver Sound Dampening* Up To 50 Additional Horsepower And Improved Response* Lower Exhaust Gas...$179.99